1,8,9‐Trihydroxyanthracene as a Green Solid Additive for Operational Stability in Organic Solar Cells

Hui Kang; Yanan Jing; Yingyu Zhang; Yanxun Li; Hong Zhang; Huiqiong Zhou; Yuan Zhang

doi:10.1002/solr.202201084

journal article Jan 12, 2023

1,8,9‐Trihydroxyanthracene as a Green Solid Additive for Operational Stability in Organic Solar Cells

Hui Kang

Yanan Jing Yingyu Zhang Yanxun Li Hong Zhang

Huiqiong Zhou

Yuan Zhang

Solar RRL Vol. 7 No. 5 · Wiley

View at Publisher Save 10.1002/solr.202201084

Abstract

A novel green solid additive, 1,8,9‐Trihydroxyanthracene (TOHA), is demonstrated to effectively improve both efficiency and stability of a highly efficient organic solar cell (OSC), comprising D18‐Cl as polymer donor and N3 as small‐molecule acceptor. The D18‐Cl:N3 device achieves an elevated power conversion efficiency of 17.91%, compared to 17.15% of that processed without TOHA. The enhanced performance is attributed to the addition of TOHA, leading to more refined phase separation and stronger molecular packing in D18‐Cl:N3 blend films, and improves the charge generation, exciton dissociation, charge transport, and collection, which contribute to higher photocurrent and fill factor for D18‐Cl:N3 OSCs. Meanwhile, TOHA‐treated D18‐Cl:N3 induces lower ΔEloss. Remarkably, it can simultaneously enhance the operational stability, with the TOHA‐treated OSC maintaining 68% of the initial efficiency after 1400 h operation. Morphology measurement (atomic force microscopy, 2D grazing‐incidence wide‐angle X‐ray scattering, and time‐of‐flight–secondary‐ion mass spectrometry) also illustrates that TOHA improves the stability of the film with smaller Urban energy value of device after aging. TOHA‐treated D18‐Cl:N3 cell after aging shows smaller reduction on exciton dissociation, charge transport, charge collection, and nonradiative recombination. This work demonstrates the significance of processing condition‐controlled additive pathways for the realization of stability, leading to superior OSC devices.

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Citations

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References

Details

Published: Jan 12, 2023
Vol/Issue: 7(5)
License: View

Authors

H

Hui Kang

School of Chemistry Beihang University Beijing 100191 China

Y

Yanan Jing

School of Chemistry Beihang University Beijing 100191 China

Y

Yingyu Zhang

National Center for Nanoscience and Technology Beijing 100191 China

Y

Yanxun Li

National Center for Nanoscience and Technology Beijing 100191 China

H

Hong Zhang

National Center for Nanoscience and Technology Beijing 100191 China

H

Huiqiong Zhou

National Center for Nanoscience and Technology Beijing 100191 China

Y

Yuan Zhang

School of Chemistry Beihang University Beijing 100191 China

Funding

National Natural Science Foundation of China Award: 21875012

Cite This Article

Hui Kang, Yanan Jing, Yingyu Zhang, et al. (2023). 1,8,9‐Trihydroxyanthracene as a Green Solid Additive for Operational Stability in Organic Solar Cells. Solar RRL, 7(5). https://doi.org/10.1002/solr.202201084

1,8,9‐Trihydroxyanthracene as a Green Solid Additive for Operational Stability in Organic Solar Cells

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